261364741 has 16 divisors (see below), whose sum is σ = 301435200. Its totient is φ = 224121600.

The previous prime is 261364739. The next prime is 261364771. The reversal of 261364741 is 147463162.

It is a cyclic number.

It is not a de Polignac number, because 261364741 - 2¹ = 261364739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261364697 and 261364706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261364771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47775 + ... + 52963.

It is an arithmetic number, because the mean of its divisors is an integer number (18839700).

Almost surely, 2^261364741 is an apocalyptic number.

It is an amenable number.

261364741 is a deficient number, since it is larger than the sum of its proper divisors (40070459).

261364741 is a wasteful number, since it uses less digits than its factorization.

261364741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460.

The product of its digits is 24192, while the sum is 34.

The square root of 261364741 is about 16166.7789308817. The cubic root of 261364741 is about 639.3652079841.

The spelling of 261364741 in words is "two hundred sixty-one million, three hundred sixty-four thousand, seven hundred forty-one".